And one-fourth to john



W. C. BUR-YEA.

PHOTOGRAPHIC RECORDER.

APPLICATION FILED SEPT. 1a. 1913.

1,323, 175. Patented Nov. 25, 1919.

4 SHEET$SHEET 1.

WITNESSES [MENTOR Z 71 2722021 6 .17141" ea W.

w. c. DURYEA. PHOTOGRAPHIC RECORDER.

APPLICATION FILED SEPT. l8, I918- 1,823, 175. Patented Nov. 25, 1919.

4 SHEETS-SHEET 2- WITNESSES 54 MENTOR 39 in 3i W. C. DURYEA.

PHOTOGRAPHIC RECORDER.

APPLICATION FILED SEPT. I8, 1918.

1,323,175. Patented Nov. 25, 1919.

4 SHEETS-SHEET 3. f' .X,

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INVENTOI? iVvfju yea A ORIVEYS WITNESSES W. C. DURYEA.

PHOTOGRAPHIC RECORDER.

APPLICATION FILED SEPT. I8. 1918.

1 ,323 175. Patented Nov. 25; 1919.

4 SHEETS-SHEET 4.

WITNESSES M a 'AITORNEyS TTNITED STATES PATENT OFFIGE.

WILLIAM C. DURYEA, 0F PRINCETON, NEW JERSEY, ASSIGNOR OF ONE-THIRD TOROBERT E. HOPKINS, OF TARRYTOWN, O. HOBBS, OF ELMHURST, NEW YORK.

NEW YORK, AND ONE-FOURTH TO JOHN PHOTOGRAPHIC RECORDER.

Application filed September 18, 1918.

To all whom it may concern.

Be it known that I, WILLIAM C. DURYEA, a citizen of the United States,and a resident of Princeton, in the county of Mercer and State of NewJersey, have invented a new and Improved Photographic Recorder, of whichthe following is a full, clear, and exact description.

This inventionrelates to cameras or ph0- tographic apparatus, and hasparticular reference to means for easily, accurately, and expeditiouslyforming upon strips or films any desired phenomena such as vibrationsdue to sound waves or the like.

Among the objects of the invention is to provide a photographic recorderhaving among others the following functions or advantages: First, foruse as a recording chronograph; to record or register the move ments ofan oscillograph; a moving coil galvanometer or strin galvanometer; foruse in the examination or study of pulsations of the heart through theinstrumentality of an electro-cardiograph, and also for recordingtelegraphic, cable, or wireless messages, signals, or the like.

With the foregoing and other objects in view the invention consists inthe arrangement and combination of parts hereinafter described andclaimed, and while the invention is not restricted to the exact detailsof construction disclosed or suggested herein, still for the purpose ofillustrating a practical embodiment thereof reference is had to theaccompanying drawings, in which like reference characters designate thesame parts in the several views, and in which Figure 1 is a sideelevation of a preferred embodiment of my invention, a portion of thegear casing being in section on the line 11 of Fig. 2.

Fig. 2 is a front elevation of the same, or looking toward the left inFig. 1.

Fig. 3 is a vertical transverse sectional detail on the line 33 of Fig.1.

Fig. 4 is an elevation of a detail of the lens mechanism as would beseen from the plane indicated by the line 4 4 of Fig. 6, parts of thestructure being o nltted.

Fig. 5 is a horizontal sectional detail on the line 55 of Fig. 2.

Fig. 6 is a general vertical longitudinal section on the line 66 of Fig.2.

Fig. 7 is a bottom plan view of the reel Specification of LettersPatent.

Patented Nov. 25, 1919.

Serial No. 254,607.

casing as would be seen from the plane of line 7 7 of Fig. 6.

, Figs. 8 and 9 are sectional detail views of the film carrying roll onthe corresponding lines of Fig. 6.

Fig. 10 is an enlarged detail view of the film feeding or controllingmechanism on the same plane as that of Fig. 6.

Fig. 11 is a view of the same mechanism as Fig. 10, but with the movableparts of the feeding mechanism in changed position.

Fig. 12 is a vertical transverse sectional detail on the line 1212 ofFig. 10; and

Fig. 13 is a plan view of a fragment of a printed film showing one ofthe Various records that may be produced with the machine.

Referring now more specifically to the drawings, I show a machine ordevice comprising a base 15, on or adjacent to which is a suitableelectromotor M whose shaft 16 carries a worm 17 meshing with a wormwheel 18 mounted upon a transverse shaft 19 having on its inner end apinion 20 meshing with and driving a large spur gear 21 mounted upon ashaft of the aforesaid film carrier shown in the form of a drum 23.

Detachably supported in any suitable manner upon and above the maincasing 24 in which the drum 23 is housed is a reel casing 25 in which isjournaled a spool or reel 26 carrying the sensitized strip or film 27.

At the front of the main casing 24 is a front panel 28 pivoted at 29 andso adapted to swing forward and downward when the locking screw 30 isloosened from the bar or plate 31 extending across the inside of thecasing. The front panel 28 carries or is provided with a forwardextension 32 ha"- ing a horizontal slot 33 therein, and over which is anadjustable shutter comprising two Plates 3% maintained in constantparallelism by means of end links 35 and 36 pivoted respectively at 37and 38 at the ends of the slot 33. A spring 39 is arranged to acttending to swing the shutter elements 34 toward each other, but a setscrew 40 acts through a fixed nut 41 against the force of the springwhereby the clear space or slit 42 between the two shutter elements andin alinement with the slot 33 will be accurately determined.

The panel 28 back of the casing 32 is provided with a slot 43 inhorizontal alinement with the slots 33 and 42 and just back of the slot43 is a lens holder 44 comprising a plate of metal, or its equivalent,mounted slidably upon a pair of pins 45 screwed or otherwise fixed intothe panel 28, a pair of springs 46 acting upon the plate 44 tending tourge it forward toward the panel 28. A plurality of set screws 47 bearrearwardly against the plate 44 to properly space the same from the slot43 and against the force of the springs 46. When the proper adj ustmentof this plate is secured the screws 47 may be locked by lock nuts 48.The lens 49 of any suitable character, but shown as oylindrical isclamped between upper and lower plates 50 and 51 by means of bolts 52 ortheir equivalent. The lower plate 51 is angular in cross section, a pairof screws 53 acting through the lower plate to lock it to the rear faceof the lens holding plate 44, and consequently serving to hold the lensproperly spaced back of the slot 54 in said plate 44. The screws 53permit such vertical adjustment of the lens as may be necessary toeffect proper alinement with all of the slots. The lens is inclosed in acasing 55 secured in any convenient manner to the inner surface of thepanel 28, and this casing likewise has a slot 56 in its back wall whichterminates just slightly spaced forward from the front portion of thecarrier drum 23.

57 indicates a developing bath through which the film is carried by thedrum 23, and from this bath the film is delivered into and through afixing bath 58.

The carrier drum 23 comprises a core 23 having a rubber coat or jacket23 covering its periphery as well as its sides. The periphery of thedrum as indicated best in Figs. 8 and 9-is provided with an annulardepression or wide groove 23, the edges of which are undercut forminglateral extensions 23 into which the edges of the film 27 are forced bythe film feeding devices, and whereby the film is carried by the drum 23through the, developing bath inperfectly straight or flat condition incross section. The periphery of the drum is furthermore provided with apair of parallel annular grooves 23*. I

Referring now to Figs. 10, 11, and 12 the feeding mechanism includes afriction roller 59 mounted upon a shaft 60 having fixed thereto a pinion61 driven from and in the same direction as the gear 21 through an idlergear 62 all within the main casing 24. This friction roller 59 is thusmounted in fixed bearings and is rotated continuously when the motor isin operation. The film is delivered downward between the friction roller59 and a gripping roller 63 journaled for rotation around a shaft 64carried in a hanger 65 pivoted at 66. The hanger and gripping roller arenormally urged rearward toward the friction roller 59 by means of aspring 67 carried by the bar 31 whereby the film is frictionally grippedand caused to be unwound from the reel 26 and delivered downward througha guide 68 having an upwardly flaring mouth 69. From the reel 26 thefilm is guided over a guide roller 70 thence downward through a slot 71between relatively fixed and movable lips 72 and 73 of felt or the like.The movable lip is carried by a slide 74 adapt-ed to be adjusted andlocked in place by means of a thumb nut 75. This fabric faced slot pro-'vides for the proper tension .on the film without undue resistance, andyet insuring that no light will strike and damage the film prematurely.

To the lower edge portion of the guide 68 is fixed a shear blade 76, thecutting edge of which cooperates with a relativel fixed shear blade 77carried by a hanger 7 8 pivoted at 79. One or more set screws 80 actingthrough a fixed abutment 81 tend to swing the hanger 78 downward againstthe force of any suitably arranged spring 82. In operation the film isfed downward through the guide 68 and between the shear blades 76 and 77as shown in Fig. 10. The shoe 83 acts upon the outer surface of the filmand by means of a pair of flanges 84 causes the edges of the film to beforced into the grooves 23. The shoe 83 is provided with upwardlyprojecting prongs 85 which serve to insure the proper delivery of theend of the film into engagement with the friction surface of the carrier23. A spring 86 having one end fixed to the hub portion of the shoe andbearing against a fixed abutment 87 urges the shoe resiliently rearwardtoward the drum 23. The lower end of the shoe is just above the line ofsight of the series of slots above described and hence the actinicimpression is made upon the film just as it is leaving the shoe.

The gripping roller 63 has a convex or crowned curved surface and onopposite sides of the center thereof are formed annular grooves 63' intowhich a pair of fingers 68 carried by the guide 68 project, whereby theloose end of the film will be positively held from curling around theroller 63. The guide 68 is provided with an arbor 86 to which isconnected a crank 87. \Vhen the crank is turned slightly around its axisthe guide 68 will be tilted around its axis from the position of Fig. 10to that of Fig. 11 with two direct results: First, the hanger 65 and itsgripping roller 63 will be forced away from the friction roller 59,since the lower end of the hanger beans constantly, by virtue of thespring 67, against the front face of the'guide 68, thereby the tractivegrip upon the film extending through the slot 71 will be instantlyreleased.

Secondly, the film is sheared off by the passage of the shear blade 76over the cutting edge of the shear blade 77. (See Fig. 11.) The motor,however, continuing to run will insure the conveyance of the exposedfilm through both the developing and fixing baths, and thence it will bedelivered to any suitable washing appliance not shown. So long as thecrank is held in its moved position there will be no further traction ofthe film 27 from the reel, but obviously when the crank is restored tonormal position the gripping roller will be brought back into normalposition with the friction roller and the film will again be deliveredfrom the guide 68 over the shoe 83, or between the shoe and the roller.

Referring now to Figs. 6 and 8 the film is delivered from the rearportion of the drum 23 by means of a stripper 88 shown as comprising amember concave at its lower surface, one edge of which adj acentto thedrum 23 is provided with fingers 89 which project into the annulargrooves 23 formed in the face of the drum and whereby the film ltSstripped from the grooved portion of the drum and. delivered rearwardand downward into the fixing bath 58 under an. agitator drum 90. Thestripper is suspended from a axis 91, and a spring 92 urges the sameforward toward the drum keeping the fingers 89 in the grooves. Theagitator drum is essentially cylindrical but hollow, having one .openend whereby the contents of the bath 58 are kept continually agitated.This drum is operated by means of a belt 93 driven from a pulley 94attached to the shaft 60 and operating over a pulley 95 fixed to theaxis 96 of said drum. This axis is journaled in a bracket 97 verticallyadjustable by means of a screw and slot connection 98 with the side ofthe bath receptacle. Through the adjustment at the screw 98' the propertension on the belt as well as the elevation of the drum 90 may beobtained.

The film 27 may be provided with any suitably arranged graduation marks27', and with the device constructed and adjusted as described and setin operation said film will be carried at a uniform rate of speed acrossthe line of sight back of the lens 49. The specific construction of theguiding means for the film and the structure of the carrier 23 itselfinsure that the film will be carried in a perfectly uniform manner orheld from any possible lateral vibration. If now any vibrating elementsuch as a string, wire, or the like which is arranged or suspendedvertically or across the sight slit formed by the shutter elements 34 animpression or image will be produced upon the film in accordance withthe vibration of such vibrating element. Obviously the process ofphotographing the action of the vibrating member may be continued aslong as desired, and the film carrying the same will be developedautomatically and immediately thereafter, or as a continuous operation.At any time, however, the film may be severed and the feed of thesensitized film stopped by the actuation of the crank 87 as described.

I claim:

1. In a photographic recorder, the combination of a casing having alight admitting opening extending therethrough and adapted to contain asensitized medium, and means to actuate said medium past the lightadmitting opening, said actuating means including a movable memberhaving a depression in its surface with undercut side edges, and meansto force said medium into the depression and with its edges extendinginto said undercuts.

2. In a photographic recorder, the combination of a casing adapted tocontain a sensitized film and having a light admitting opening, meanscarried by the casing to con trol the action of light therethrough uponthe film, a rotating film carrier having a substantially smooth surfaceto receive the film, said surface being bounded by undercut flanges, andmeans to automatically force the edges of the film beneath said undercutflanges whereby the film is carried in a substantially flat form and ata definite distance from the light controlling means.

3. In a photographic recorder, the combination of a casing adapted tocontain a sensitized film and having an opening to admit light in aplane, means to actuate the film toward and across the plane of theadmitted light, said actuating means including a pair of cooperatingrollers gripping the film on opposite sides, a film carrier, means tocause the carrier to grip the film and carry it at a fixed distance fromthe light controlling means, and means to actuate the gripping means andcarrier simultaneously and at a uniform speed.

4. In a photographic recorder, the combination of a casing adapted tocontain a sensitized film and having an opening to admit light in aplane, means to control the admission of light therethrough, means forholding a developing bath, means to actuate the film toward the plane ofthe admitted light, a film carrier, means to cause the film carrier tograsp the film after it has been actuated by the aforesaid actuatingmeans and carry it at a fixed distance from the light controlling meansand thence through the developing bath, and means to actuate theactuating means and carrier at a uniform s eed.

5. In a photographic recorder, the combination of a casing adapted tocontain a sensitized film and having a light admitting opening, means tocontrol the admission of light therethrough, a film carrier in the formof a rotatable member, said carrier being provided on its surface with adepression having lateral extensions, means to introduce the film intothe depression, means to cause the edges of the film to be forced intothe lateral extensions whereby the film is carried at a uniform distancefrom the light controlling means, and means to actuate the film carrierand film delivery means simultaneously and uniformly."

, 6. In a photographic recorder, the combi:

nation of a casing adapted to contain a sensitized film and having alight "admitting ope light therethrough, means to carry the film meansto control the admission of at a uniform rate of speed across the lightand at a fixed distance from the light controllingmeans, and filmfeeding devices serving to deliver the film to the carrier, said feedingdevice including a frictionroller journaled for rotation around a fixedaxis, means to rotate the roller at a definite speed with respect to themovement of the film carrier, a gripping roller cooperating with thefriction roller, and means to cause the.

. carrier and simultaneously deliver the film through the developingbath through which the carrier operates, and means to render thedelivery means inactive and sever from the main portion of the fihn theexposed portion thereof while the carrier continues to operate todevelop and discharge the exposed and developed portion of the film 9.In a device of the character set forth, the combination of a casinghaving a light admitting opening, means to control the admission oflight therethrough, an endless film carrier, means for holding adeveloping bath, means to deliver a sensitized film to the carrierwhereby it is carried at a fixed distance from the light controllingmeans and across the light and then through the developing bath, andmeans to discharge the film from the carrier through the casing.

10. In a device of the character set forth, the combination of a casing,means to admit and control the admission of light thereinto to deliver afilm to the surface of the carrier whereby it is carried across saidplane and at a uniform distance from the light controlling means, and astripper serving to discharge the film from the carrier through thecasing, said stripper having means projecting into the carrier beneaththe film.

11. In a device of the character set forth, the combination of a casing,means for holding a developing bath, a drum shaped film carrieroperating within the caslng and through the developing bath, saidcarrier being provided with annular rooves at its engaging surface,means to eliver a film to the grooved surface and over the grooves, thefilm being carried by the carrier throu h the bath, and astripper todischarge t e film from the carrier and thence from the casing, saidstripper including a concave member one edge of which is provided withfingers projecting into said grooves beneath the film.

12. In a device of the character set forth, the combination of a casing,means to admit and control the admission of light thereinto in a thinsheet, a film carrierserving to carry a film across the plane of thelight and at a definite distance from the controlling means, means todeliver thefilm to the carrier, said delivery means including devices toactuate and propel the film, and also including movable means to severthe exposed portion of the film from the unexposed portion thereof.

13. In a device of the character set forth,

the combination of a casing, a film carrier therein, means to deliver afilm to the carrier, said delivery means including a friction roller,means to actuate the roller and carrier at a constant uniform speed,said delivery means also including a gripping roller and a hanger uponwhich the gripping roller is journaled, said hanger including a filmguide, and means cooperating with the film guide tosever the portion ofthe film being actuated by the carrier, the last mentioned means servingto separate the gripping roller from the friction roller and therebystop the delivery of the film while the friction roller and carriercontinue in operation.

WILLIAM C. DURYEA.

